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                  <a href="#gst-plugins-base-libs-ISO-639-lang-mappings.description" class="shortcut">Description</a></span>
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<a name="gst-plugins-base-libs-ISO-639-lang-mappings"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-ISO-639-lang-mappings.top_of_page"></a>ISO-639 lang mappings</span></h2>
<p>ISO-639 lang mappings — mappings for ISO-639 language codes and names</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-libs-ISO-639-lang-mappings.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-get-language-codes" title="gst_tag_get_language_codes ()">gst_tag_get_language_codes</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-get-language-name" title="gst_tag_get_language_name ()">gst_tag_get_language_name</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-get-language-code" title="gst_tag_get_language_code()">gst_tag_get_language_code</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-get-language-code-iso-639-1" title="gst_tag_get_language_code_iso_639_1 ()">gst_tag_get_language_code_iso_639_1</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-get-language-code-iso-639-2B" title="gst_tag_get_language_code_iso_639_2B ()">gst_tag_get_language_code_iso_639_2B</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-get-language-code-iso-639-2T" title="gst_tag_get_language_code_iso_639_2T ()">gst_tag_get_language_code_iso_639_2T</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-check-language-code" title="gst_tag_check_language_code ()">gst_tag_check_language_code</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-ISO-639-lang-mappings.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/tag/tag.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-ISO-639-lang-mappings.description"></a><h2>Description</h2>
<p>Provides helper functions to convert between the various ISO-639 language
codes, and to map language codes to language names.</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-ISO-639-lang-mappings.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-tag-get-language-codes"></a><h3>gst_tag_get_language_codes ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> **
gst_tag_get_language_codes (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Returns a list of known language codes (in form of two-letter ISO-639-1
codes). This is useful for UIs to build a list of available languages for
tagging purposes (e.g. to tag an audio track appropriately in a video or
audio editor).</p>
<div class="refsect3">
<a name="gst-tag-get-language-codes.returns"></a><h4>Returns</h4>
<p>NULL-terminated string array with two-letter
language codes. Free with <a href="/usr/share/gtk-doc/html/glib/glib-String-Utility-Functions.html#g-strfreev"><code class="function">g_strfreev()</code></a> when no longer needed. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-get-language-name"></a><h3>gst_tag_get_language_name ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_tag_get_language_name (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *language_code</code></em>);</pre>
<p>Returns the name of the language given an ISO-639 language code as
found in a GST_TAG_LANGUAGE_CODE tag. The name will be translated
according to the current locale (if the library was built against the
iso-codes package, otherwise the English name will be returned).</p>
<p>Language codes are case-sensitive and expected to be lower case.</p>
<div class="refsect3">
<a name="gst-tag-get-language-name.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>language_code</p></td>
<td class="parameter_description"><p>two or three-letter ISO-639 language code</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-tag-get-language-name.returns"></a><h4>Returns</h4>
<p> language name in UTF-8 format, or NULL if <em class="parameter"><code>language_code</code></em>
could
not be mapped to a language name. The returned string must not be
modified and does not need to freed; it will stay valid until the
application is terminated.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-get-language-code"></a><h3>gst_tag_get_language_code()</h3>
<pre class="programlisting">#define             gst_tag_get_language_code(lang_code)</pre>
<p>Convenience macro wrapping <a class="link" href="gst-plugins-base-libs-ISO-639-lang-mappings.html#gst-tag-get-language-code-iso-639-1" title="gst_tag_get_language_code_iso_639_1 ()"><code class="function">gst_tag_get_language_code_iso_639_1()</code></a>.</p>
<div class="refsect3">
<a name="gst-tag-get-language-code.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>lang_code</p></td>
<td class="parameter_description"><p>ISO-639 language code (e.g. "deu" or "ger" or "de")</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-get-language-code-iso-639-1"></a><h3>gst_tag_get_language_code_iso_639_1 ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_tag_get_language_code_iso_639_1 (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *lang_code</code></em>);</pre>
<p>Returns two-letter ISO-639-1 language code given a three-letter ISO-639-2
language code or two-letter ISO-639-1 language code (both are accepted for
convenience).</p>
<p>Language codes are case-sensitive and expected to be lower case.</p>
<div class="refsect3">
<a name="gst-tag-get-language-code-iso-639-1.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>lang_code</p></td>
<td class="parameter_description"><p>ISO-639 language code (e.g. "deu" or "ger" or "de")</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-tag-get-language-code-iso-639-1.returns"></a><h4>Returns</h4>
<p> two-letter ISO-639-1 language code string that maps to <em class="parameter"><code>lang_code</code></em>
,
or NULL if no mapping is known. The returned string must not be
modified or freed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-get-language-code-iso-639-2B"></a><h3>gst_tag_get_language_code_iso_639_2B ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_tag_get_language_code_iso_639_2B (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *lang_code</code></em>);</pre>
<p>Returns three-letter ISO-639-2 "bibliographic" language code given a
two-letter ISO-639-1 language code or a three-letter ISO-639-2 language
code (both are accepted for convenience).</p>
<p>The "bibliographic" code is derived from the English name of the language
(e.g. "ger" for German instead of "de" or "deu"). In most scenarios, the
"terminological" codes are prefered.</p>
<p>Language codes are case-sensitive and expected to be lower case.</p>
<div class="refsect3">
<a name="gst-tag-get-language-code-iso-639-2B.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>lang_code</p></td>
<td class="parameter_description"><p>ISO-639 language code (e.g. "deu" or "ger" or "de")</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-tag-get-language-code-iso-639-2B.returns"></a><h4>Returns</h4>
<p> three-letter ISO-639-2 language code string that maps to <em class="parameter"><code>lang_code</code></em>
,
or NULL if no mapping is known. The returned string must not be
modified or freed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-get-language-code-iso-639-2T"></a><h3>gst_tag_get_language_code_iso_639_2T ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_tag_get_language_code_iso_639_2T (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *lang_code</code></em>);</pre>
<p>Returns three-letter ISO-639-2 "terminological" language code given a
two-letter ISO-639-1 language code or a three-letter ISO-639-2 language
code (both are accepted for convenience).</p>
<p>The "terminological" code is derived from the local name of the language
(e.g. "deu" for German instead of "ger"). In most scenarios, the
"terminological" codes are prefered over the "bibliographic" ones.</p>
<p>Language codes are case-sensitive and expected to be lower case.</p>
<div class="refsect3">
<a name="gst-tag-get-language-code-iso-639-2T.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>lang_code</p></td>
<td class="parameter_description"><p>ISO-639 language code (e.g. "deu" or "ger" or "de")</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-tag-get-language-code-iso-639-2T.returns"></a><h4>Returns</h4>
<p> three-letter ISO-639-2 language code string that maps to <em class="parameter"><code>lang_code</code></em>
,
or NULL if no mapping is known. The returned string must not be
modified or freed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-tag-check-language-code"></a><h3>gst_tag_check_language_code ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_tag_check_language_code (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *lang_code</code></em>);</pre>
<p>Check if a given string contains a known ISO 639 language code.</p>
<p>This is useful in situations where it's not clear whether a given
string is a language code (which should be put into a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstTagList.html#GST-TAG-LANGUAGE-CODE:CAPS"><span class="type">GST_TAG_LANGUAGE_CODE</span></a>
tag) or a free-form language name descriptor (which should be put into a
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstTagList.html#GST-TAG-LANGUAGE-NAME:CAPS"><span class="type">GST_TAG_LANGUAGE_NAME</span></a> tag instead).</p>
<div class="refsect3">
<a name="gst-tag-check-language-code.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>lang_code</p></td>
<td class="parameter_description"><p>ISO-639 language code (e.g. "deu" or "ger" or "de")</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gst-tag-check-language-code.returns"></a><h4>Returns</h4>
<p> TRUE if the two- or three-letter language code in <em class="parameter"><code>lang_code</code></em>
is a valid ISO-639 language code.</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-ISO-639-lang-mappings.other_details"></a><h2>Types and Values</h2>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-ISO-639-lang-mappings.see-also"></a><h2>See Also</h2>
<p><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstTagList.html#GstTagList-struct"><span class="type">GstTagList</span></a></p>
</div>
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